b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
116 lines
2.6 KiB
JavaScript
Executable file
116 lines
2.6 KiB
JavaScript
Executable file
/**
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* This module is used to show/hide themes menuItem based on the number of
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* current installed themes.
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*
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* @module ThemesItem
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*/
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define(function(require) {
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'use strict';
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var AppsCache = require('modules/apps_cache');
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function ThemesItem(element) {
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this._enabled = false;
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this._element = element;
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this._themeCount = 0;
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this._boundUpdateThemes = this._updateThemes.bind(this);
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this.init();
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}
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ThemesItem.prototype = {
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/**
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* Set current status of themesItem
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*
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* @access public
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* @param {Boolean} enabled
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* @memberOf ThemesItem
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*/
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set enabled(enabled) {
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if (this._enabled === enabled) {
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return;
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} else {
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this._enabled = enabled;
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if (this._enabled) {
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this._updateThemeSectionVisibility();
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}
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}
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},
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/**
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* Get current status of themesItem
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*
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* @access public
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* @memberOf ThemesItem
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*/
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get enabled() {
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return this._enabled;
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},
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/**
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* Initialization
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*
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* @access private
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* @memberOf ThemesItem
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* @return {Promise}
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*/
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init: function() {
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var self = this;
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AppsCache.addEventListener('install', this._boundUpdateThemes);
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AppsCache.addEventListener('uninstall', this._boundUpdateThemes);
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return AppsCache.apps().then(function(apps) {
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apps.some(function(app) {
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if (self._isThemeApp(app)) {
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self._themeCount += 1;
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}
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});
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self._updateThemeSectionVisibility();
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});
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},
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/**
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* Check whether this app is theme app
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*
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* @param {Object} app
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* @returns {Boolean}
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* @memberOf ThemesItem
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*/
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_isThemeApp: function(app) {
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var manifest = app.manifest || app.updateManifest;
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return manifest.role === 'theme';
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},
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/**
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* We have to update theme count based on incoming evt and
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* decide to show/hide or not.
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*
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* @param {Object} evt
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* @memberOf ThemesItem
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*/
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_updateThemes: function(evt) {
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var app = evt && evt.application;
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var type = evt.type;
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if (this._isThemeApp(app)) {
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if (type === 'install') {
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this._themeCount += 1;
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} else if (type === 'uninstall') {
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this._themeCount -= 1;
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}
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this._updateThemeSectionVisibility();
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}
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},
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/**
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* Update theme section visibility based on _themeCount
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*
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* @memberOf ThemesItem
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*/
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_updateThemeSectionVisibility: function() {
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this._element.hidden = (this._themeCount < 2);
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}
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};
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return function ctor_themesItem(element) {
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return new ThemesItem(element);
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};
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});
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